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TR2GEOM

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Basic Information

Name of Program

TR2GEOM

Version-Date

December 1997

Description-Date

December 1997

Catchwords

postprocessor
finite difference method
conversion of a finite difference grid
equivalent finite element grid
numerical modelling system TRIM-2D
numerical modelling system TRIM-3D

Short Description of Functionality

The program TR2GEOM is a postprocessor for the numerical models TRIM-2D as well as TRIM-3D. This program serves to convert the bathymetry given in the TRIM-format into an equivalent one defined on a finite element grid given in the TICAD-format.

The application of this program is a prerequisite for the later usage of various model-independent postprocessors (for graphics and data analysis).

Input-Files

  1. general input data (filetype tr2geom.dat)
  2. bathymetry and index-arrays (filetype tr2.topo.bin.ind)
  3. (optional) protection polygons (filetype nodes.save)
Notice:
  1. the name of the file must be nodes.save
  2. protection polygons are automatically taken into account when the file is present in the working directory
  3. see also comments in the example file
  4. use program UPDA2D as an alternative

Output-Files

  1. equivalent grid (filetype gitter05.dat/bin) or systemfile (filetype sysdat.bin, will no longer be supported in the future)
  2. list of edges (filetype fkvz.bin)
  3. list of neighbour elements (filetype fkez.bin)

(optional) trace of program execution (filetype tr2geom.trc)

Methodology

The TRIM-topography is defined at all U and V computational points on a regular finite difference grid with constant grid size. Linear interpolation is used to compute the bathymetric depth for the nodal points of an equivalent finite element grid. Each finite difference grid cell can be optionally split into 2 or 8 triangles.

Program(s) to run before this Program

TR2KACHEL, TRIM-2D, TRIM-3D, TRIMKACH

Program(s) to run after this Program

DIDAMERGE, TOUTR, TR2DIDA, TR3DIDA, XTRLQ2, ZEITR, HVIEW2D, JANET, WARM

Additional Information

Language

Fortran90

Additional software

-

Original Version

T. Damrau, G. Lang, I. Uliczka

Maintenance

G. Lang

Documentation/Literature

$PROGHOME/examples/tr2geom/


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